Multi-channel automatic testing device

Abstract

The utility model provides a multi-channel automatic testing device, relates to the technical field of microwave radio testing, and solves the limitation problems of difficulty in plugging and unplugging of antenna ports, poor testing consistency, low efficiency and the like in a traditional manual mode. A fixed test box body of the device is internally provided with a time relay control board and a radio frequency switch full-function evaluation board which are connected with each other, a multi-port antenna assembly is inserted into an antenna interface of the box body, and a vector network analyzer is connected to an analysis interface of the box body; the radio frequency switch full-function evaluation board is connected with the multi-port antenna assembly and the vector network analyzer through the cable wiring harness, the time relay control board is used for generating electric signals corresponding to different time settings, and the radio frequency switch full-function evaluation board is used for changing the on-off state of a multi-channel signal link of the radio frequency switch full-function evaluation board to complete link switching. And each port of the multi-port antenna assembly is conducted with the vector network analyzer in sequence. According to the utility model, rapid and accurate testing of the multi-port antenna assembly is effectively realized.

Description

Technical Field

[0001] This utility model relates to the field of microwave radio testing technology and is applied to the commissioning and testing of multi-port antenna components, specifically to a multi-channel automatic testing device. Background Technology

[0002] Phased array antenna technology is a key area of ​​development in the field of radio radar. With the rapid development of wireless communication technology, and considering the aerodynamic and stealth performance of aircraft, conformal antennas have evolved from planar to curved surfaces. As a crucial component of wireless communication devices, the performance of antenna elements directly affects communication quality. Multi-port curved conformal antenna elements are widely used in airborne projects of modern communication devices. A phased array antenna typically comprises hundreds to thousands of antenna elements; therefore, accurate and efficient testing of each element is essential. Traditional manual testing methods are not only inefficient but also susceptible to human error, making it difficult to guarantee the accuracy and reliability of test results. Manual testing can no longer meet the ever-increasing production demands.

[0003] When performing traditional S-parameter testing on multiport antenna assemblies, such as a five-port assembly, three key S-parameters typically need to be evaluated: Voltage Standing Wave Ratio (VSWR) S11, Insertion Loss (S21), and Isolation (S12). The testing process involves the use of a vector network analyzer and requires manual connection of test cables to the different ports. To ensure testing accuracy, the entire process should be performed sequentially according to the following steps:

[0004] First, for the measurement of single-port S-parameters (such as voltage standing wave ratio S11), connect the test cable interface P1 of the vector network analyzer to each port of the antenna assembly in sequence (from port 1 to port 5), and complete the S11 parameter test for each port one by one.

[0005] Next, before testing the two-port S-parameters (such as insertion loss S21 and isolation S12), a common reference port needs to be set up. In this example, port 3 of the antenna assembly is selected as the common port, and the test cable interface P2 is fixedly connected to it. Then, the test cable interface P1 is reconnected to the remaining ports in sequence (i.e., ports 1, 2, 4, and 5) to test the insertion loss and isolation between each pair of ports separately.

[0006] Throughout the testing process, the operator had to manually plug and unplug the cable more than 10 times to ensure that all necessary S-parameters were measured accurately. While this manual cable switching method was effective, it was time-consuming and carried the risk of inaccurate measurements due to human error.

[0007] Therefore, manual installation, testing, and data acquisition are extremely tedious, time-consuming, and labor-intensive. Frequent disassembly and reassembly affect the reliability of test cables and adapters, significantly impacting test results. Furthermore, repeated disassembly and reassembly of the finished multi-port antenna assembly interfaces pose a risk of damage and hinders subsequent testing and maintenance. Continuing to use this manual testing method will inevitably severely impact the normal delivery cycle of the multi-port antenna assemblies.

[0008] However, to date, there is no automated test device on the market that can achieve controllable delay, support ultra-wideband non-reflective 50Ω, and multi-channel automatic switching to improve the testing efficiency of multi-port antenna components. Automated test devices, as an important means of inspecting product quality and improving testing efficiency, will become crucial tools, especially in antenna product debugging and testing, and can be widely used in many fields such as test instruments, radio, radar and electronic countermeasures (ECM), microwave radio and VSAT (Very Small Aperture Terminal). Utility Model Content

[0009] The purpose of this invention is to solve the limitations of traditional manual testing methods, such as difficulty in plugging and unplugging antenna ports, poor test consistency, and low efficiency. Therefore, it provides a multi-channel automatic testing device. This device performs S-parameter testing on multi-port antenna components and uses cascaded technology of time relays, RF switches, and test cable bundles to achieve rapid and accurate testing of multi-port antenna components. It has the advantages of high testing accuracy, flexible module configuration, relatively simple composition, and low cost, and has important practical application significance.

[0010] The present invention employs the following technical solution to achieve its objective:

[0011] A multi-channel automatic testing device includes a fixed test housing containing a time relay control board and a full-function RF switch evaluation board connected to each other. A multi-port antenna assembly to be tested is plugged into an antenna interface on the surface of the fixed test housing. A vector network analyzer for performing the testing task is connected to an analysis interface on the surface of the fixed test housing. The full-function RF switch evaluation board is connected to the antenna interface and the analysis interface via cable bundles, and then to the multi-port antenna assembly and the vector network analyzer, respectively. The time relay control board generates electrical signals corresponding to different time settings, and the full-function RF switch evaluation board changes the on / off state of its multi-channel signal links under different electrical signals, completing link switching and sequentially connecting each port of the multi-port antenna assembly to the vector network analyzer.

[0012] Specifically, a power interface is provided on the surface of the fixed test box. The time relay control board is connected to the first DC power supply through this power interface, and the RF switch full-function evaluation board is connected to the second DC power supply through this power interface.

[0013] Specifically, the full-function evaluation board for RF switches consists of an RF chip, resistors, capacitors, and a connector circuit board. The connector circuit board carries the RF chip, resistors, and capacitors. The connector circuit board is connected to the cable bundle. The connector circuit board also has multiple test points, each of which is connected to a time relay control board and corresponds to different electrical signal inputs from the time relay control board.

[0014] Preferably, the radio frequency chip is an ADRF5050 switching chip, and both the input and output ports of this switching chip are 50Ω non-reflective ports.

[0015] Specifically, the time relay control board consists of a printed circuit board, an LCD display, and three time delay relays. Both the LCD display and the three time delay relays are mounted on the printed circuit board. The LCD display is used to display the time settings, and the three time delay relays are used to set the time sequence of the test task process.

[0016] Preferably, the printed circuit board of the time relay control board is also connected to a push-button switch, which is set on the surface of the fixed test box and is used to control the start and stop of the test task.

[0017] Preferably, the push button switch is a normally open contact switch with self-resetting and no locking, and the maximum current passing value of the push button switch is greater than the sum of the current values ​​of the time relay control board and the RF switch full-function evaluation board.

[0018] Specifically, the cable bundle consists of a bundle block and multiple sets of test cables. The bundle block is used to organize and bundle the multiple sets of test cables and place them in the receiving space of the fixed test box. One end of each set of test cables is connected to the connector of the RF switch full-function evaluation board, and the other end is fixedly connected to the antenna interface or analysis interface. At least one set of test cables is fixedly connected to the analysis interface, and the number of test cable sets fixedly connected to the antenna interface matches the number of ports of the multi-port antenna assembly. When the multi-port antenna assembly is plugged into the antenna interface, the ports of the multi-port antenna assembly are connected to the corresponding test cables.

[0019] Preferably, the fixed test box is detachably divided into an upper box and a lower box; the antenna interface is located on the upper surface of the upper box; the lower box contains multiple mounting brackets, each of which is used to install a time relay control board, a full-function RF switch evaluation board, or auxiliary electrical components.

[0020] Preferably, the upper surface of the upper section of the housing has a recessed groove in which the antenna interface is disposed; the upper section of the housing is also provided with an ejection mechanism, which has a pressing end and an ejection end connected to each other. The pressing end is disposed on the upper surface of the upper section of the housing, and the ejection end is disposed in the recessed groove and corresponds to the position of the antenna interface; when the multi-port antenna assembly is inserted into the antenna interface, the pressing end is pressed to make the ejection end act on the multi-port antenna assembly, pushing the multi-port antenna assembly upward and disconnecting it from the antenna interface.

[0021] In summary, due to the adoption of this technical solution, the beneficial effects of this utility model are as follows:

[0022] This invention's automatic testing device significantly outperforms traditional manual testing methods in terms of testing efficiency and performance accuracy, and is applicable across a wide frequency range of 100MHz-18GHz. By employing a device structure with a push-out function, it enables rapid connection of multi-port antenna assemblies, effectively solving the problems of difficult and repetitive cable insertion and removal during antenna testing. This improvement not only eliminates the need for human intervention and shortens connection time but also avoids damage or loss to antenna products or test cables caused by cumbersome operations. Therefore, this design greatly improves work efficiency; for a 5-port antenna assembly, the testing time is reduced from an average of 270 seconds to an average of 20 seconds, resulting in a 12.5-fold increase in efficiency.

[0023] In this invention, the RF switch employs a non-reflective 50Ω design, making the connection of other ports approximately equivalent to a 50Ω matched load, thereby improving the consistency of multi-port test performance by 20%. Furthermore, the structural features of this test device ensure the stability of test quality while reducing the loss rate of test consumables such as cables and connectors by 80%, demonstrating cost-effectiveness.

[0024] In this invention, a time relay control board is used to control the operation of the full-function RF switch evaluation board, precisely adjusting the timing of the opening and closing of each channel, thus achieving automated connection between the antenna end and the test equipment end. This structural feature further improves work efficiency, and because a non-reflective 50Ω full-function RF switch evaluation board is selected for integration with the in-phase test cable harness cascade secondary design, good electromagnetic compatibility and shielding characteristics are ensured, thereby ensuring the validity and consistency of test results at each port of the antenna product.

[0025] In this invention, the movable ejection mechanism of the fixed test box enables quick assembly and disassembly of multi-port antenna assemblies, allowing the assembly and adjustment of an antenna assembly to be completed in a single operation while maintaining test reliability. The time relay control board allows for customizable enable modes, logically selecting the delay during channel switching, increasing flexibility and freedom in the antenna testing process. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the automatic testing device of this utility model;

[0027] Figure 2 This is a schematic diagram of the external structure of the full-function evaluation board for the radio frequency switch in this utility model;

[0028] Figure 3 This is a schematic diagram of the cable bundle structure in this utility model;

[0029] Figure 4 for Figure 3 A schematic diagram of the structure of the cable bundle block in the cable bundle;

[0030] Figure 5 This is a schematic diagram of the external structure of the fixed test box in this utility model;

[0031] Figure 6 This is a perspective view of the internal wireframe structure of the fixed test box in this utility model.

[0032] The meanings of the markings in the attached diagram are as follows:

[0033] 11-RF chip; 12-Connector circuit board; 21-Wire harness block; 22-Test cable; 31-Upper section box; 32-Lower section box; 33-Ejection mechanism. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0036] Example 1

[0037] A multi-channel automatic testing device, the overall structure of which can be seen in [reference needed]. Figure 1 The diagram illustrates a fixed test housing containing an interconnected time relay control board and a full-function RF switch evaluation board. The multi-port antenna assembly under test is plugged into an antenna interface on the surface of the fixed test housing, while a vector network analyzer for performing the test is connected to an analysis interface on the surface of the fixed test housing. The full-function RF switch evaluation board is connected to both the antenna interface and the analysis interface via cable bundles, and subsequently to the multi-port antenna assembly and the vector network analyzer, respectively.

[0038] In this embodiment, the time relay control board is used to generate electrical signals corresponding to different time settings, and the RF switch full-function evaluation board is used to change the on / off state of its own multi-channel signal link under the action of different electrical signals, complete the link switching, and make each port of the multi-port antenna assembly sequentially connected to the vector network analyzer.

[0039] The automatic testing device in this embodiment has a square structure. Its components can be placed vertically inside the fixed test box. The box also has sufficient space to facilitate the disassembly, replacement, placement, and heat dissipation of the interfaces of the full-function evaluation board of RF switches and cable bundles.

[0040] The RF switch full-function evaluation board is the core component for automated testing of multi-port antenna assemblies in this embodiment. It is used to switch between different paths, enabling each switching channel to connect and measure the performance parameters of each port of the multi-port antenna assembly. Based on this, the time relay control board controls the timing or sequence of test tasks. By configuring the time relays, and employing mature methods such as triggering, timing, or cycling, it achieves electrical signal outputs with different functions such as inching, self-locking, interlocking, or delay.

[0041] When different electrical signals are input to the full-function RF switch evaluation board, enabling its low-voltage crystal logic (LVTTL) and allowing for compatible selection control functions, the switching status and port mirroring functions of all terminals can be realized. When one channel is turned on, all other channels will automatically switch to port mirroring mode, and their output will be terminated by an internal terminating resistor to ensure non-reflective impedance matching. The RF signal output from the vector network analyzer is connected to the turn-on channel of the full-function RF switch evaluation board via a test cable, and then connected and output to one of the ports of the multi-port antenna assembly via a cable bundle, thus testing the S-parameter performance of that antenna port. The automatic turn-on of each RF channel after a delay allows for automated control of the multi-port antenna assembly test and performance testing with the assistance of the vector network analyzer.

[0042] The use of cable bundles here ensures consistency and stability during the testing process and facilitates organization. The entire automated testing device effectively achieves efficient connection and automatic switching of multi-port antenna components. The specific selection of the full-function evaluation board for RF switches can also bring about low-loss, high-isolation, and non-reflective signal transmission link effects.

[0043] Example 2

[0044] Based on Example 1, this example provides a detailed preferred configuration for the key components of the multi-channel automatic test device, namely the time relay control board and the RF switch full-function evaluation board. This section can also be found in [reference needed]. Figure 1 Schematic diagram of the structure.

[0045] This embodiment primarily utilizes Analog Devices' ADRF5050 RF switch chip and YYS-4 time relay control board, which are integrated after secondary processing and design. This enables the full-function RF switch evaluation board to operate with single / dual power supply voltages and cover an ultra-wideband frequency range (10MHz-20GHz) with a non-reflective 50Ω design.

[0046] First, such as Figure 2 As shown, the full-function evaluation board for the RF switch consists of an RF chip 11, resistors, capacitors, and a connector circuit board 12. The connector circuit board 12 carries the RF chip 11, resistors, and capacitors. The connector circuit board 12 is connected to the cable bundle. In this embodiment, the connector circuit board 12 is also provided with multiple test points, each of which is connected to a time relay control board and corresponds to different electrical signal inputs from the time relay control board.

[0047] A full-function RF switch evaluation board typically consists of a non-reflective SP4T type switch chip (i.e., its RF chip 11 uses the ADRF5050 model) and its connector circuit board 12, thereby realizing operations such as opening and closing of each signal link and link switching. In this embodiment, the input and output ports of the switch chip are both 50Ω non-reflective ports, and it also features low insertion loss, high isolation, fast switching speed, logic selection control, no low-frequency spurious emissions, and high linearity.

[0048] The time relay control board consists of a printed circuit board, an LCD display, and three time-delay relays, all mounted on the printed circuit board. It also includes several capacitor and resistor power interfaces and operation buttons. The LCD display shows time settings and other relevant information, while the three time-delay relays are used to set the timing sequence of the test tasks, ensuring the accuracy and stability of the testing process. The time relay control board features high precision, high reliability, and multiple time setting modes. Furthermore, to facilitate signal transmission with the full-function RF switch evaluation board, this embodiment's time relay control board can be configured with both a digital signal interface and an extended remote control interface.

[0049] In this embodiment, the exemplary method for setting the working mode of the time relay control board is as follows: Press and hold the SET button on the time relay control board for 2 seconds to enter the P function setting. Adjust the function mode using "+" and "-", select the P-02 timer cycle mode, and press SET to confirm after adjustment. Then adjust the delay interval of the beat trigger, again using "+" and "-" to adjust the size, and KEY to adjust the decimal point. Press SET to confirm after adjustment. Set the delay of the three delay relays in sequence, and press SET to confirm. The LCD displays "----" to indicate that the setting is complete, and the time relay control board enters the standby state.

[0050] Example 3

[0051] Based on any of the above embodiments, this embodiment provides a detailed preferred description of auxiliary components for a multi-channel automatic testing device. This section can also be found in [reference needed]. Figure 1 Schematic diagram of the structure.

[0052] Firstly, regarding power supply, a power interface is provided on the surface of the fixed test box. The time relay control board is connected to the first DC power supply through this power interface, which provides a DC power input of 7.7V; the RF switch full-function evaluation board is connected to the second DC power supply through this power interface, which provides a DC power input of 3.3V.

[0053] Secondly, regarding cables, such as Figure 3 and Figure 4As shown, the cable bundle consists of a bundle block 21 and multiple sets of test cables 22. This embodiment uses a configuration of one bundle block 21 and five sets of test cables 22, thereby enabling automated testing of up to four-port antenna assemblies. The bundle block 21 is used to organize and bundle the multiple sets of test cables 22 and place them within the housing of the fixed test box. One end of each set of test cables 22 is connected to the connector on the RF switch full-function evaluation board, and the other end is fixedly located at the antenna interface or analysis interface. For the configuration of the number of test cables 22 designed according to actual needs, at least one set of test cables 22 is fixedly connected to the analysis interface, and the number of test cables 22 fixedly connected to the antenna interface matches the number of ports of the multi-port antenna assembly. Subsequently, when the multi-port antenna assembly is plugged into the antenna interface, the ports of the multi-port antenna assembly are connected to the corresponding test cables 22.

[0054] Test cable 22 is selected as a DC-26.5GHz in-phase (±5°) GAU2-SMMGPPF-500 cable or equivalent or higher performance cable to meet the performance requirements of the vector network analyzer's RF signal transmission to the antenna assembly and the mutual matching of various standard interfaces. In this embodiment, for different antenna test tasks, the interface type can be selected and changed by replacing the cables inside the cable bundle, forming various antenna-specific multi-channel automatic test devices.

[0055] In this embodiment, the printed circuit board of the time relay control board is also connected to a push-button switch. The push-button switch is disposed on the surface of the fixed test box and is used to control the start and stop of the test task. This push-button switch is a normally open contact switch with self-resetting and no locking mechanism. The maximum current carrying capacity of the push-button switch is greater than the sum of the current values ​​of the time relay control board and the RF switch full-function evaluation board. Given the chip model and circuit board selection in this embodiment, and considering the input power parameters, the allowable current and voltage of the push-button switch is 3A / 250V.

[0056] Example 4

[0057] Based on any of the above embodiments, this embodiment provides a detailed preferred description of the fixed test housing of the multi-channel automatic testing device. This section can be found in [link to relevant documentation]. Figure 1 The structural diagram, and Figure 5 , Figure 6 A schematic diagram of its external structure and internal wireframe.

[0058] The fixed test box is detachably divided into an upper box 31 and a lower box 32. The antenna interface is located on the upper surface of the upper box 31. The lower box 32 contains multiple mounting brackets, each of which is used to mount a time relay control board, a full-function RF switch evaluation board, or auxiliary electrical components.

[0059] In this embodiment, a groove is provided on the upper surface of the upper section box 31, and an antenna interface is provided in the groove; a screw hole mounting position can also be provided inside the upper section box 31, which matches the cable bundle block 21, so as to fix the test cable.

[0060] As a preferred design in this embodiment, the upper housing 31 is further provided with an ejection mechanism 33. The ejection mechanism 33 has a pressing end and an ejection end connected together. The pressing end is disposed on the upper surface of the upper housing 31, and the ejection end is disposed in the recess and corresponds to the antenna interface position. The connection between the pressing end and the ejection end can adopt a common elastic rotation connection in the mechanical field. That is, the pressing end causes the ejection end to rotate and rise around the fulcrum between them, which, in conjunction with the shape and structure of the multi-port antenna assembly, pushes it out of the recess. Therefore, when the multi-port antenna assembly is inserted into the antenna interface, by pressing the pressing end, the ejection end acts on the multi-port antenna assembly, pushing the multi-port antenna assembly upward, thus disconnecting it from the antenna interface. This structure allows for convenient and quick removal of the multi-port antenna assembly.

[0061] Based on the preferred structures of the above embodiments, the specific working principle of this utility model can be briefly described as follows:

[0062] First, a rapid antenna test platform corresponding to the multi-channel automatic test device is set up. The multi-channel automatic test device is placed in front of the workbench where the vector network analyzer is located. The vector network analyzer and the two types of DC power supplies are turned on. According to the technical requirements of the antenna product, the channel parameters of the vector network analyzer and the parameters of the DC power supplies are set and calibrated. 7.7V and 3.3V DC power are drawn from the two types of DC power supplies respectively, with a current set to 0.5A, and connected to the power interface of the multi-channel automatic test device. After the power supply of the entire platform is turned on, the vector network analyzer is connected to the analysis interface of the multi-channel automatic test device, and then connected to the RFC input terminal of the RF switch full-function evaluation board.

[0063] Next, the multi-port antenna assembly to be tested can be plugged into the antenna interface on the surface of the fixed test box. Each type of multi-port antenna assembly has its corresponding multi-channel automatic test device. The main difference lies in the different antenna interface types and structures. Mechanical design and cable configuration can be carried out according to actual conditions.

[0064] After pressing the button switch connected to the printed circuit board of the time relay control board, the multi-channel automatic test device can operate in a preset sequence, measuring the S-parameters of the antenna components connected to RF1-4 in turn, and reading the test performance curves and values ​​on the vector network analyzer display page to determine whether they meet the technical requirements.

[0065] After all ports of the antenna assembly have been tested, press the pressing end of the ejection mechanism 33 on the upper surface of the fixed test box. The antenna assembly will pop out through the ejection end. After the test is completed, turn off the two types of DC power supplies and the vector network analyzer, remove the relevant connecting cables and store them. The cable bundle itself is stored inside the fixed test box. This completes all the procedures for testing the multi-port antenna assembly.

[0066] In summary, the automatic testing device of this utility model, through optimized hardware design, brings higher efficiency, better consistency, and longer equipment lifespan to the testing of antenna products, while also reducing manpower requirements and providing a more reliable and efficient testing solution.

Claims

1. A multi-lane automatic test device, characterized by: The device has a fixed test box body, a time relay control board and a radio frequency switch full function evaluation board are installed in the fixed test box body and are connected with each other; a multi-port antenna assembly to be tested is plugged into an antenna interface on the surface of the fixed test box body, and a vector network analyzer used for performing a test task is connected to an analysis interface on the surface of the fixed test box body; the radio frequency switch full function evaluation board is connected to the antenna interface and the analysis interface through a cable hub respectively, and then is connected to the multi-port antenna assembly and the vector network analyzer respectively; the time relay control board is used for generating electrical signals corresponding to different time settings, and the radio frequency switch full function evaluation board is used for changing the opening and closing states of its own multi-channel signal links under the action of different electrical signals, completing link switching, and making each port of the multi-port antenna assembly conductive with the vector network analyzer in turn.

2. The multi-channel automatic test apparatus according to claim 1, characterized by: A power supply interface is arranged on the surface of the fixed test box body, the time relay control board is connected to a first direct current power supply through the power supply interface, and the radio frequency switch full function evaluation board is connected to a second direct current power supply through the power supply interface.

3. The multi-channel automatic test apparatus according to claim 1, characterized by: The radio frequency switch full function evaluation board is composed of a radio frequency chip, resistors, capacitors and a connector circuit board, the radio frequency chip, the resistors and the capacitors are carried on the connector circuit board; the connector circuit board is connected with the cable hub; a plurality of test points are further arranged on the connector circuit board, each test point is connected to the time relay control board and respectively corresponds to different electrical signal inputs from the time relay control board.

4. The multi-channel automatic test apparatus according to claim 3, characterized by: The radio frequency chip adopts a switch chip with a model of ADRF5050, and the input and output ports of the switch chip are both 50Ω non-reflection ports.

5. The multi-channel automatic test apparatus of claim 1, wherein: The time relay control board is composed of a printed circuit board, a liquid crystal display and three-way delay relays, the liquid crystal display and the three-way delay relays are both arranged on the printed circuit board; the liquid crystal display is used for displaying time settings, and the three-way delay relays are used for setting the time sequence of a test task process.

6. The multi-channel automatic test apparatus according to claim 5, characterized by: The printed circuit board of the time relay control board is further connected with a push button switch, the push button switch is arranged on the surface of the fixed test box body, and the push button switch is used for controlling the start and stop of the test task.

7. The multi-channel automatic test apparatus according to claim 6, characterized by: The push button switch adopts a normally open point touch switch with self-resetting and without lock, and the maximum current passing value of the push button switch is greater than the sum of the current values of the time relay control board and the radio frequency switch full function evaluation board.

8. The multi-channel automatic test apparatus of claim 1, wherein: The cable hub is composed of a hub block and a plurality of groups of test cables, the hub block is used for arranging and collecting the plurality of groups of test cables and then placing them in the accommodating space of the fixed test box body; one end of each group of test cables is connected to the connector of the radio frequency switch full function evaluation board, and the other end is fixedly connected to the antenna interface or the analysis interface; at least one group of test cables is fixedly connected to the analysis interface, the number of groups of test cables fixedly connected to the antenna interface matches the number of ports of the multi-port antenna assembly; when the multi-port antenna assembly is plugged into the antenna interface, the ports of the multi-port antenna assembly are connected to the corresponding test cables.

9. The multi-channel automatic test apparatus of claim 1, wherein: The fixed test box body is detachable and divided into an upper box body and a lower box body; the antenna interface is arranged on the upper surface of the upper box body; a plurality of mounting brackets are arranged in the lower box body, and each mounting bracket is used for corresponding installation of a time relay control board, a radio frequency switch full-function evaluation board or an auxiliary electrical component.

10. The multi-channel automatic test apparatus according to claim 9, characterized by: The upper surface of the upper box body is provided with a sink, and the antenna interface is arranged in the sink; the upper box body is further provided with an ejection movable mechanism, the ejection movable mechanism has a connected pressing end and an ejection end, the pressing end is arranged on the upper surface of the upper box body, the ejection end is arranged in the sink and corresponds to the position of the antenna interface; after the multi-port antenna assembly is inserted into the antenna interface, the ejection end acts on the multi-port antenna assembly through the pressing operation of the pressing end, the multi-port antenna assembly is ejected upwards, and the connection between the multi-port antenna assembly and the antenna interface is disconnected.

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